Related Clues:
- _____ acid
- __ acid (protein building block)
- __ acid
- With 71-Down, protein building block
- Kind of acid found in protein
- Acid used in fertilizers and explosives
- Part of a chemistry group
- Nitrogen/hydrogen radical
- Kind of acid in protein
- Kind of acid synthesized to produce aspartame
- Corrosive acid
- Protein building block, for short
- __ acids (protein building block)
- Protein acid, for short
- Another 46-Across